<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <title>Document</title>
</head>
<body>
    <div id="app" >
        <button @click="addCurrt">点击</button>
        <button @keyup="keyCode($event,20)">Enter</button>
        <h3 :style="style1">{{currt}}</h3>
    </div>
    <script>

        new Vue({
            el:"#app",
            data(){
                return{
                    currt:0,
                    style1:{
                        color:"hotpink",
                        fontSize:"30px"
                    }
                }
            },
            methods:{
                addCurrt(e){
                    console.log(e);
                    this.currt ++
                },
                keyCode(e,num){
                    if(e.keyCode === 13){
                        this.currt += num
                    }
                }
            }
        })
    </script>
</body>
</html>